HTML-BLOCKS & DIVSIONS:<Div> tag is work like a container, it means it contains a bunch of HTML elements with that
Division.using Divisions Or <Div> we can Apply CSS (Cascade Style Sheet) for many elements in one time.usually developers using
this tag to apply CSS for perticular div as per user requirment.Using Class & ID attribute we can able to make Unique style for all Divisions.it is little difficult to explain Divisions oraly. please watch below
videos for more understanding.

HTML COMMENTS:

<body>
<Div Style="Background-Color:blue;">
<p>tag is work like a container, it means it contains a bunch of HTML elements with that
Division.using Divisions Or <Div> we can Apply CSS (Cascade Style Sheet) for many elements in one time.usually developers using
this tag to apply CSS for perticular div as per user requirment.it is little difficult to explain Divisions oraly. please watch below
videos for more understanding.</p>
</Div>
<Div Class="site1">
<p>tag is work like a container, it means it contains a bunch of HTML elements with that
Division.using Divisions Or <Div> we can Apply CSS (Cascade Style Sheet) for many elements in one time.usually developers using
this tag to apply CSS for perticular div as per user requirment.it is little difficult to explain Divisions oraly. please watch below
videos for more understanding.</p>
</Div>
<Div Class="site1">
<p>tag is work like a container, it means it contains a bunch of HTML elements with that
Division.using Divisions Or <Div> we can Apply CSS (Cascade Style Sheet) for many elements in one time.usually developers using
this tag to apply CSS for perticular div as per user requirment.it is little difficult to explain Divisions oraly. please watch below
videos for more understanding.</p>
</Div>
</body>
for both site1 class we can apply CSS through external style sheet in one time.
TRY IT FOR YOUR PRACTICE.